((a)) Any person aggrieved by an order of the Commission may obtain a review of such order in the court of appeals of the United States, within any circuit wherein such person resides or has his principal place of business, or in the United States Court of Appeals for the District of Columbia, by filing in such Court, within sixty days after the entry of such order, a written petition praying that the order of the Commission be modified or be set aside in whole or in part. A copy of such petition shall be forthwith transmitted by the clerk of the court to the Commission, and thereupon the Commission shall file in the court the record upon which the order complained of was entered, as provided in . No objection to the order of the Commission shall be considered by the court unless such objection shall have been urged before the Commission. The finding of the Commission as to the facts, if supported by evidence, shall be conclusive. If either party shall apply to the court for leave to adduce additional evidence, and shall show to the satisfaction of the court that such additional evidence is material and that there were reasonable grounds for failure to adduce such evidence in the hearing before the Commission, the court may order such additional evidence to be taken before the Commission and to be adduced upon the hearing in such manner and upon such terms and conditions as to the court may seem proper. The Commission may modify its findings as to the facts, by reason of the additional evidence so taken, and it shall file such modified or new findings, which, if supported by evidence, shall be conclusive, and its recommendation, if any, for the modification or setting aside of the original order. The jurisdiction of the court shall be exclusive and its judgment and decree, affirming, modifying, or setting aside, in whole or in part, any order of the Commission, shall be final, subject to review by the Supreme Court of the United States upon certiorari or certification as provided in .

((b)) The commencement of proceedings under subsection (a) shall not, unless specifically ordered by the court, operate as a stay of the Commission’s order.